Self-heating soldering-iron.



A. HUSSON. SELF HEATING SOLDBBING IRON.

nrmourlon FILED oom. 15.1908.

Patented Aug. 31, 1909.

VII-Ilflll'llllnlrnrlul WITNESSES ATTUHNE YS AUGUST HUSSON, 0F OSHKOSH,WISUONSIN.

SELF-HEATING SOLDERING-IRON.

Specication of Letters Patent.

Application filed October 15, 1903. Serial No..457,880.

To all 'whom it may concern:

I e it known that I AUGUST HUSSON, a citizen of the United States, and aresident of Oshkosh, in the county of Winnebago and State of Wisconsin,have invented a new and Improved Self-Heating Soldering-Iron, of whichthe following is a full, clear, and exact description.

This invention relates to solderin irons such as are adapted to heat theso dering bit and maintain the same in a heated condition.

The invention relates especially to the type of irons of this classwhich are heated by liquid fuel.

The object of the invention is to produce an iron of this class which issimple in construction and which will operate eifectively to produce athorough vaporization of the liquid as it is admitted to the burner.

A further object of the invention is to construct the device so as torender the inner parts readily accessible.

The invention consists in the construction and combination of parts tobe more fully described hereinafter and particularly set forth in theclaims. Reference is to be had to the accompanylng drawings forming apart of this specificatlon, in which similar characters of referenceindicate corresponding parts in all the figures.

Figure 1 is a longitudinal section taken through a soldering ironconstructed according to my invention; Fig. 2 is a cross section takenon the line 2 2 of Fig'. l and illustrating the manner of securing thebit in position; Fig. 3 is a cross section on the line 3 3 of Fig. 1,and illustrating the construction at the back of the device where thefuel is admitted; and Fig. 4 is a longitudinal section at the forwardpart of the device showing a modiiied form of bit which I ma employ.

eferring more particularl to the parts, 1 represents the body of theevice Whlch is in the form of a barrel or cylinder having a cylindricalheating chamber 2 formed therein. The forward end of the barrel isformed into a tapered nose 3 having a centrally disposed socket 4 formedlongitudinally therein, which communicates with the chamber 2, asindicated. This socket is of reduced diameter, and in its side walls,gas

ducts or channels 5 are formed which lead to f the outer air from thechamber 2. In the socket 4, a bit 6 or soldering iron, is removably heldby means of a set screw 7, as shown. The butt end of this bit projectsinto the chamber 2 and is in a position to receive the fiame from theburner 8. This burner is of conical form and of perforated metal orgauze. It 'is disposed co-axially with the bit 6, with the small enddisposed toward the bit. The base of this cone seats against a baffleplate 9, which baiiie plate in turn seats against a plug ,10, and thisplug is received in a counterbore 11 formed in the rear end of thebarrel. The baffle plate 9 is preferably dished inwardly, and is formedwith a central openingr 12 as indicated. To the rear of the plug 10, inthe counterbore 11, an air chamber 13 is provided. Mounted centrally inthe plug 10 there is provided an air inlet tube 14:, the inner end ofwhich connects with the air chamber 13. The forward end of this tubeprojects through the truncated end of the co-nlcal burner 8, as shown. r

In the plug 10, a fuel nipple 15 is provided, which extends through theplug so as to deliver fuel into the space between the dished baiileplate and the body of the lug. This nipple is inclined inwardly at itsforward end so that it directs the fuel toward the central opening 12.The inner face of the plug is formed with a recess o r dish 16, asindicated. The nipple 15 projects completely across the air chamber 13,and its rear end is cut on an incline, as indicated, so that the rearedge of the tube is in the plane of the rear face 17 of the body 1. Themouth of this nipple is beveled on its inner side, as

shown.

Against the rear face 17 of the body, a cover or bonnet 18 seats, thebody of this bonnet being in the form of a plate, and this plateprojects at one side so as to form a ange19 which is attached by a screw2O to a similar flan e 21 formed on the rear end of the body. lgIhe rearend of the nipple 15 seats against the inner face of this cover, and isin direct alinement with a needle valve 22. Said needle valve has aconical seat 23 having a in-hole therein and the stem 24 of the va ve isprovided with threads 25 which enable the stem to be advanced onto theseat when the hand-wheel 26 carried by Patented Aug. 31, 1909.

the stem is rotated. This stem 24 is suitabl packed by means of astuffing boX 27, as Wi l be readily understood.

At the opposite end of the cover, a boss 28 is provided, at which a tube29 is attached. This tube has a suitable handle 30, and said tube 29projects beyond the rear end of the handle 30 and has a supply hose 31attached thereto, as indicated. 0n the side of the body adjacent to thisboss 28, a cylindrical pocket or bore 32 is formed, and the aXis of thisbore is parallel with that of the barrel 1. On the inner face of thecover 18, a tubular shell 33 is provided, which fits neatly in thisbore. This shell is closed at its inner end but open at its outer end.In the boss 28 at which the tube 29 is attached, a gauze strainer 34 isprovided, and beyond this strainer, in the lower part of the bore, aninner tube 35 is provided, having an open mouth, as shown. This tube 35receives the fuel as it comes through the tube 29 and strainer 34 andconducts it into the inner end of the shell 33. .The interior of thisshell constitutes a vaporizing chamber for the fuel and the combustiblevapor is conducted from the shell 33 to the valve by means of atransverse fuel duct 36 which is formed in the cover, as indicated inFigs. 1 and 3.

In order to admit air to the air chamber 13, air inlet openings 37 areprovided at each side of the cover, as shown 1n Fig. 3.

In the operation of the burner, the high temperature of the barrel iscommunicated to the vaporizing chamber formed in the interior of theshell 33. The vaporizing fuel then passes up to the valve where it 1sadlnitted across the air chamber 13 by means of the nipple 15. Thisnipple 15 discharges it onto the bailie plate and it Finds its Waythrough the central openin 12 therein into the interior of the conicaburner. As it issues from the burner it is supplied with air through theair tube 14 so that a flame is formed in the heating chamber 2 and thisflame is directed against the butt end of the bit.

In Fig. 1 the bit 6 is represented as a short straight bar having asoldering point 38 formed on the end thereof. Instead of using a bit ofthis form, however, I may use a bent or offset bit 39, as illustrated inFig. 4. In this bit the outer end of the bit is bent at right angles tothe body thereof. These bits are of course interchan eable and can bereadily removed when esired. The gases of combustion find exit from thedevice throu h the openings 5 at the sides of the bit. n account of thearrangement of the openin s 5 at the sides of the bit, the gases of comustion are directed not only against the butt end of the bit, but passalong the side of the bit until they arrive near the soldering point.

Special attention is called to the shell 33 and the manner in which itis received in the pocket 32. The pocket operates as a guide for theentire cover when the cover is being seated, so that it is onlynecessary to provide a single fastening screw 2O to hold the parts inposition. The function of this screw is simply to hold the cover inplace and to prevent its sliding rearwardly from its seat.

Having thus described my invention, I claim as new and desire to secureby Letters Patent,-

1. In a selfheating soldering iron, in combination, a barrel having aheating chamber formed therein, a bit projecting into said heatingchamber, a conical burner seated in said barrel behind said bit, abaille plate in the base of said burner and having an opening thereinthrough which fuel may be admitted, and an air inlet tube conducting airthrough said opening to said heating chamber.

2. In a self-heating soldering iron, in combination, a barrel having aheating chamber therein, a bit mounted in said barrel and projectinginto said heating chamber, a plug mounted in the rear end of saidbarrel, a burner disposed adjacent to the inner face of said plug, afuel nipple. mounted in said plug, a cover seating on the rear end ofsaid barrel and forming a seat for the rear end of said fuel nipple,said cover having a fuel duct communicatin with said fuel nipple, andmeans for admittin air to said burner.

3. In a self-heating so dering iron,in combination, a barrel having aheating chamber therein, a bit mounted in said barrel and proj ectlnginto said heating chamber, a plug 1n the rear end of saidbarrel, aburner on the inner side of said plug, said barrel having an air chamberformed at the rear of said plu a fuel nipple leading to said burner trough said plug and extending across said air chamber, a cover seatingon the rear end of said barrel and forming a seat for the rear end ofsaid fuel nip le, said cover havin means for admitting fiilel to saidfuel nipp e, means for admittin air to said air chamber, and means forcon ucting the air from said air chamber to said heating chamber.

4. In a self-heating soldering iron, in combination, a barrel having aheating chamber therein, a bit mounted in said barrel and projectinginto said heating chamber, a burner mounted in said barrel behind saidbit, a plug mounted in said barrel, said barrel having an air chamberformed therein at the rear of said lug, a fuel nipple passing throughsaid p ug and extending across said air chamber, a cover seating on therear end of said barrel and forming a seat for the rear end of said fuelni ple, an air inlet tube extending through said plug and openincommunication from said air chamber to sald heatin chamber, and an inletvalve carried by sai cover adapted to admit fuel to Said fuel nipple,said air chamber being in communication with the atmosphere.

5. In a self-heating soldering iron, in combination, a barrel having aheating chamber therein and having a cylindrical pocket formed at theside of said heatin chamber, a cover seating on the rear end o saidbarrel having a cylindrical vaporizing shell eX- tending into saidpocket, means for conducting the. fuel through said vaporizin shell andthrough said cover, and means or admitting the fuel from said cover tosaid heating chamber.

In a self-heating Soldering iron, in combination, a barrel having aheating chamber therein, a cover seating on the rear end of said barreland having a cylindrical vaporizing shell projecting inwardly from theinner face thereof, said barrel having a cylindrical bore formed at theside thereof receiving said vaporzing shell, means for admitting fuel tothe inner end of said Vaporizing Shell, means for conducting the fuelthrough said cover, and means for admitting the fuel from said cover tosaid heating chamber.

7. In a self-heating soldering iron in combination, a barrel having aheating chamber therein and having a cylindrical pocket at the side ofsaid barrel, a cover having a tubular shell projecting from the innerface thereof and received in Said pocket, an inlet tube extendingdownwardly into said shell and adapted to conduct fuel thereto, saidcover having a fuel duct therein communicating with the interior of saidshell, and a valve in communication with said fuel duct and adapted toadmit fuel to Suid heating chamber.

In testimony 'whereof I have signed my name to this specification in thepresence of two Subscribing Witnesses.

AUGUST HU SSON.

